I'm working on a local development environment (via Acquia Dev Desktop). Our theme is a subtheme of the Stack theme.
In this situation, I'm making changes to my .theme file, but they don't seem to be loading at all. If I make the same changes to the stack.theme, they load and work as expected.
I've ensured I'm using function
<subtheme>_theme_suggestions_page_alter but still no luck. There is nothing in the error.log either.